Casting Core Deburring via Gravity Accelerated Blasting Shower
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Solution Overview
Problem
Existing methods for deburring casting cores and molds are not suitable for cores of different shapes, are time-consuming, and result in device wear, leading to potential contamination and weakening of cast workpieces due to unresolved burrs.
Innovation Solution
A method and device utilizing a flood shower with a jet of blasting material, where the casting core or mold is held and moved relative to the blasting material jet, allowing for easy deburring without precise control and minimizing device wear, using gravity or compressed air to accelerate particles, and optionally employing a swivel arm robot for precise guidance and a suction device for fragment removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional deburring devices are used, then deburring can be achieved, but the devices wear out and are not suitable for cores of different shapes
Solution Approach 1:
The patent replaces traditional mechanical contact-based deburring devices with a blasting material jet system. Instead of using mechanical tools that physically contact and wear against the core surfaces, the invention uses a jet of blasting material (such as sand or abrasive particles) delivered through a nozzle. This substitution eliminates mechanical wear on the deburring device while maintaining effectiveness across different core shapes and sizes, as the blasting material adapts to various geometries without requiring shape-specific tooling.
Solution Approach 2:
The patent employs adjustable parameters of the blasting material jet, including nozzle position, blasting material flow rate, and particle size distribution, to effectively deburr cores of different shapes. By varying these parameters, the same blasting device can adapt to different core geometries without physical modification, resolving the contradiction between device durability and adaptability.
2Manufacturing precision
If robot-based deburring with milling tools is used, then precise control is achieved, but the process is time-consuming and requires precise control
Solution Approach 1:
The blasting material jet operates continuously as the core passes through the treatment zone, eliminating the need for stop-start robotic positioning and tool changes. The continuous jet of blasting material maintains constant contact with the core surface, achieving rapid deburring without the time losses associated with robotic tool changes, repositioning, and program adjustments, while still providing precise control through nozzle positioning.
3Ease of manufacture
If blasting material jet is used, then device wear is eliminated and deburring is easy, but the blasting material must be accelerated
Solution Approach 1:
The blasting material utilizes its own weight and gravitational potential energy to achieve the necessary acceleration as it falls from the nozzle. The system is designed so that the blasting material naturally accelerates under gravity during its descent toward the core surface, eliminating the need for separate energy input mechanisms such as compressors or motors to accelerate the material. This self-acceleration approach simplifies the system while maintaining effective blasting energy.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient, precise, and damage-free deburring of casting cores and molds, reducing contamination risks and extending device lifespan, while allowing for clean deburring without damaging the surrounding surface.
Implementation Method 1
the jet of material is accelerated by its potential energy after emerging from the water jet and hits the casting core or the casting mold after a predetermined fall height
Implementation Method 2
the individual particles are accelerated by a medium, such as compressed air
Data Source
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Figure 3
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AI summary
The invention relates to a method for deburring casting cores (1) and/or casting moulds (2), comprising the following method steps: providing a casting core (1) or a casting mould (2) with a burr (4) thereon; providing a deburring device (5) having a dousing shower (6) for generating a shower (7) of blasting material; a retaining device (13) for receiving the casting core (1) and/or the casting mould (2); relatively moving the casting core (1) or the casting mould (2) in relation to the blasting material shower (7) such that the blasting material shower (7) impinges on the burr (4) on the casting core (1) or the casting mould (2), and the burr (4) is struck off the casting core (1) or the casting mould (2) by means of the blasting material shower (7). The invention also relates to a device for carrying out the method.